diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3aaa2348a..0c9389ef1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,6 +23,9 @@ jobs:
       - name: Lint
         run: pnpm lint
 
+      - name: Test types
+        run: pnpm tsc --noEmit
+
       - name: Sync
         run: pnpm sync
 
diff --git a/lib/modules.ts b/lib/modules.ts
index c9eac7d18..b4fffe21d 100644
--- a/lib/modules.ts
+++ b/lib/modules.ts
@@ -10,7 +10,7 @@ import { categories } from './categories'
 import type { ModuleInfo } from './types'
 import { fetchGithubPkg, modulesDir, distDir, distFile, rootDir } from './utils'
 
-export async function sync(name, repo?: string, isNew: boolean = false) {
+export async function sync(name: string, repo?: string, isNew: boolean = false) {
   const mod = await getModule(name)
 
   // Repo
@@ -23,7 +23,7 @@ export async function sync(name, repo?: string, isNew: boolean = false) {
   }
 
   // Defaults
-  if (!mod.repo) {
+  if (!mod.repo && repo) {
     mod.repo = repo
   }
   if (!mod.github) {
@@ -58,7 +58,7 @@ export async function sync(name, repo?: string, isNew: boolean = false) {
     }
   }
   else if (!categories.includes(mod.category)) {
-    let newCat = mod.category[0].toUpperCase() + mod.category.substr(1)
+    let newCat = mod.category[0]!.toUpperCase() + mod.category.substr(1)
     if (newCat.length <= 3) {
       newCat = newCat.toUpperCase()
     }
@@ -72,7 +72,7 @@ export async function sync(name, repo?: string, isNew: boolean = false) {
 
   // ci is flaky with external links
   if (!isCI) {
-    for (const key of ['website', 'learn_more']) {
+    for (const key of ['website', 'learn_more'] as const) {
       if (mod[key] && !mod[key].includes('github.com')) {
         // we just need to test that we get a 200 response (or a valid redirect)
         await $fetch(mod[key]).catch((err) => {
@@ -111,6 +111,8 @@ export async function sync(name, repo?: string, isNew: boolean = false) {
   for (const key in mod) {
     if (!validFields.includes(key)) {
       invalidFields.push(key)
+
+      // @ts-expect-error dynamic delete
       // eslint-disable-next-line @typescript-eslint/no-dynamic-delete
       delete mod[key]
     }
@@ -137,7 +139,7 @@ export async function sync(name, repo?: string, isNew: boolean = false) {
   // TODO: Sync with maintainers.app
   if (!mod.maintainers.length) {
     const owner = mod.repo.split('/')[0]
-    if (owner !== 'nuxt-community' && owner !== 'nuxt') {
+    if (owner && owner !== 'nuxt-community' && owner !== 'nuxt') {
       mod.maintainers.push({
         name: owner,
         github: owner,
@@ -164,7 +166,7 @@ export async function sync(name, repo?: string, isNew: boolean = false) {
   return mod
 }
 
-export async function getModule(name): Promise<ModuleInfo> {
+export async function getModule(name: string): Promise<ModuleInfo> {
   let mod: ModuleInfo = {
     name,
     description: '',
@@ -191,7 +193,7 @@ export async function getModule(name): Promise<ModuleInfo> {
   return mod
 }
 
-export async function writeModule(module) {
+export async function writeModule(module: ModuleInfo) {
   const file = resolve(modulesDir, `${module.name}.yml`)
   await fsp.writeFile(file, yml.dump(module), 'utf8')
 }
diff --git a/lib/utils.ts b/lib/utils.ts
index 3e55fe72c..57c7b6cbf 100644
--- a/lib/utils.ts
+++ b/lib/utils.ts
@@ -6,18 +6,18 @@ export const modulesDir = resolve(rootDir, 'modules')
 export const distDir = resolve(rootDir)
 export const distFile = resolve(distDir, 'modules.json')
 
-export function fetchPKG(name) {
+export function fetchPKG(name: string) {
   return ofetch('http://registry.npmjs.org/' + name)
 }
 
-export function fetchRawGithub(path) {
+export function fetchRawGithub(path: string) {
   return ofetch('https://raw.githubusercontent.com/' + path, { responseType: 'json' })
 }
 
-export function fetchGithubPkg(repo) {
+export function fetchGithubPkg(repo: string) {
   let path: string
   // HEAD will be the default branch
-  [repo, path = 'HEAD'] = repo.split('#')
+  [repo, path = 'HEAD'] = repo.split('#') as [string, string?]
 
   return fetchRawGithub(repo + '/' + path + '/' + 'package.json')
 }
diff --git a/tsconfig.json b/tsconfig.json
index 186aaefdb..37c1bf244 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,3 +1,21 @@
 {
-  "extends": "./website/.nuxt/tsconfig.json"
+  "compilerOptions": {
+    "target": "es2022",
+    "lib": [
+      "es2022"
+    ],
+    "moduleDetection": "force",
+    "module": "preserve",
+    "resolveJsonModule": true,
+    "allowJs": true,
+    "strict": true,
+    "noImplicitOverride": true,
+    "noUncheckedIndexedAccess": true,
+    "noEmit": true,
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "isolatedModules": true,
+    "verbatimModuleSyntax": true,
+    "skipLibCheck": true
+  }
 }